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http://dx.doi.org/10.3741/JKWRA.2020.53.12.1173

Accuracy evaluation of threshold rainfall impacting pedestrian using ROC  

Choo, Kyungsu (Department of Urban Environmental Disaster Management, Kangwon National University)
Kang, Dongho (Department of Urban Environmental Disaster Management, Kangwon National University)
Kim, Byungsik (Department of Urban Environmental Disaster Management, Kangwon National University)
Publication Information
Journal of Korea Water Resources Association / v.53, no.12, 2020 , pp. 1173-1181 More about this Journal
Abstract
Recently, as local heavy rains occur frequently in a short period of time, economic and social impacts are increasing beyond the simple primary damage. In advanced meteorologically advanced countries, realistic and reliable impact forecasts are conducted by analyzing socio-economic impacts, not information transmission as simple weather forecasts. In this paper, the degree of flooding was derived using the Spatial Runoff Assessment Tool (S-RAT) and FLO-2D models to calculate the threshold rainfall that can affect human walking, and the threshold rainfall of the concept of Grid to Grid (G2G) was calculated. In addition, although it was used a lot in the medical field in the past, a quantitative accuracy analysis was performed through the ROC analysis technique, which is widely used in natural phenomena such as drought or flood and machine learning. As a result of the analysis, the results of the time period similar to that of the actual and simulated immersion were obtained, and as a result of the ROC (Receiver Operating Characteristic) curve, the adequacy of the fair stage was secured with more than 0.7.
Keywords
Urban flooding; Impact forecast; Flood simulation; ROC; Threshold rainfall;
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Times Cited By KSCI : 14  (Citation Analysis)
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